Terraform

Terraform Variables API

Manage workspace and variable sets

GitHub OpenAPI

Operations 4

GET /workspaces/{workspace_id}/vars List Workspace Variables #
POST /workspaces/{workspace_id}/vars Create a Workspace Variable #
PATCH /workspaces/{workspace_id}/vars/{variable_id} Update a Workspace Variable #
DELETE /workspaces/{workspace_id}/vars/{variable_id} Delete a Workspace Variable #

Documentation

📖
Documentation
https://developer.hashicorp.com/terraform/cloud-docs/api-docs
📖
Documentation
https://developer.hashicorp.com/terraform/cloud-docs/api-docs/workspaces
📖
Documentation
https://developer.hashicorp.com/terraform/cloud-docs/api-docs/run
📖
Documentation
https://developer.hashicorp.com/terraform/cloud-docs/api-docs/state-versions
📖
Documentation
https://developer.hashicorp.com/terraform/registry/api-docs

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/terraform/refs/heads/main/openapi/terraform-variables-api-openapi.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/terraform-variables-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

terraform-variables-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: HCP Terraform Variables API
  description: The HCP Terraform API provides programmatic access to HCP Terraform features including workspace management, runs, state versions, policies, teams, and organizations. The API follows the JSON API specification.
  version: '2.0'
  contact:
    name: HashiCorp Support
    url: https://support.hashicorp.com
  license:
    name: Business Source License 1.1
    url: https://github.com/hashicorp/terraform/blob/main/LICENSE
servers:
- url: https://app.terraform.io/api/v2
  description: HCP Terraform Production API
security:
- bearerAuth: []
tags:
- name: Variables
  description: Manage workspace and variable sets
paths:
  /workspaces/{workspace_id}/vars:
    get:
      operationId: ListWorkspaceVariables
      summary: List Workspace Variables
      description: Lists all variables for a workspace.
      tags:
      - Variables
      parameters:
      - name: workspace_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: List of variables
          content:
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/VariableList'
    post:
      operationId: CreateWorkspaceVariable
      summary: Create a Workspace Variable
      description: Creates a new variable for a workspace.
      tags:
      - Variables
      parameters:
      - name: workspace_id
        in: path
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              $ref: '#/components/schemas/VariableCreateRequest'
      responses:
        '201':
          description: Variable created
          content:
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/VariableResponse'
  /workspaces/{workspace_id}/vars/{variable_id}:
    patch:
      operationId: UpdateWorkspaceVariable
      summary: Update a Workspace Variable
      description: Updates an existing workspace variable.
      tags:
      - Variables
      parameters:
      - name: workspace_id
        in: path
        required: true
        schema:
          type: string
      - name: variable_id
        in: path
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              $ref: '#/components/schemas/VariableUpdateRequest'
      responses:
        '200':
          description: Variable updated
          content:
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/VariableResponse'
    delete:
      operationId: DeleteWorkspaceVariable
      summary: Delete a Workspace Variable
      description: Deletes a workspace variable.
      tags:
      - Variables
      parameters:
      - name: workspace_id
        in: path
        required: true
        schema:
          type: string
      - name: variable_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '204':
          description: Variable deleted
components:
  schemas:
    VariableList:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Variable'
    VariableResponse:
      type: object
      properties:
        data:
          $ref: '#/components/schemas/Variable'
    Variable:
      type: object
      properties:
        id:
          type: string
        type:
          type: string
          enum:
          - vars
        attributes:
          type: object
          properties:
            key:
              type: string
            value:
              type: string
            description:
              type: string
            category:
              type: string
              enum:
              - terraform
              - env
            hcl:
              type: boolean
            sensitive:
              type: boolean
    VariableCreateRequest:
      type: object
      required:
      - data
      properties:
        data:
          type: object
          properties:
            type:
              type: string
              enum:
              - vars
            attributes:
              type: object
              required:
              - key
              - category
              properties:
                key:
                  type: string
                value:
                  type: string
                description:
                  type: string
                category:
                  type: string
                  enum:
                  - terraform
                  - env
                hcl:
                  type: boolean
                sensitive:
                  type: boolean
    VariableUpdateRequest:
      type: object
      properties:
        data:
          type: object
          properties:
            attributes:
              type: object
              properties:
                key:
                  type: string
                value:
                  type: string
                description:
                  type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Bearer token authentication. Use organization, team, or user tokens.